Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/01/2021   22:33:38   (   0.04,-137.22) (  -0.02,-137.59)   41.93                80
 03/02/2021   22:17:33   (   0.04,-137.22) (   0.96,-133.05)  474.56                80
 03/04/2021   10:39:21   (  -0.04,-137.21) (   0.18,-138.33)  126.34                80
 03/05/2021   10:17:56   (  -0.04,-137.21) (  -0.79,-133.79)  389.50                80
 03/06/2021   22:39:52   (   0.03,-137.19) (  -0.37,-139.09)  216.19                80
 03/07/2021   22:23:46   (   0.03,-137.18) (   0.60,-134.55)  299.38                80
 03/09/2021   10:45:34   (  -0.02,-137.17) (   0.59,-139.82)  302.35                80
 03/10/2021   10:24:09   (  -0.01,-137.16) (  -0.44,-135.29)  212.99                80
 03/11/2021   22:46:04   (   0.01,-137.14) (  -0.77,-140.59)  393.39                80
 03/12/2021   22:30:00   (   0.01,-137.12) (   0.26,-136.06)  121.85                80